BR9811174A - Methods for identifying optical fibers that exhibit high levels of polarization dispersion - Google Patents

Methods for identifying optical fibers that exhibit high levels of polarization dispersion

Info

Publication number
BR9811174A
BR9811174A BR9811174-4A BR9811174A BR9811174A BR 9811174 A BR9811174 A BR 9811174A BR 9811174 A BR9811174 A BR 9811174A BR 9811174 A BR9811174 A BR 9811174A
Authority
BR
Brazil
Prior art keywords
methods
optical fibers
high levels
exhibit high
identifying optical
Prior art date
Application number
BR9811174-4A
Other languages
Portuguese (pt)
Inventor
Lori Lee Haskins
Annette Louise Vandervort
Original Assignee
Corning Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Corning Inc filed Critical Corning Inc
Publication of BR9811174A publication Critical patent/BR9811174A/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
    • G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
    • G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
    • G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
    • G01M11/3163—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR by measuring dispersion

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Testing Of Optical Devices Or Fibers (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

Methods for identifying optical fibers which exhibit elevated levels of polarization mode dispersion (PMD) are provided. The methods employ difference traces obtained from optical time domain reflectometer (OTDR) measurements. The presence of a cyclical pattern in such a difference trace has been found to be indicative of a fiber having an elevated level of PMD.
BR9811174-4A 1997-08-18 1998-08-14 Methods for identifying optical fibers that exhibit high levels of polarization dispersion BR9811174A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5567797P 1997-08-18 1997-08-18
PCT/US1998/016920 WO1999009397A1 (en) 1997-08-18 1998-08-14 Methods for identifying optical fibers which exhibit elevated levels of polarization mode dispersion

Publications (1)

Publication Number Publication Date
BR9811174A true BR9811174A (en) 2000-07-25

Family

ID=21999461

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9811174-4A BR9811174A (en) 1997-08-18 1998-08-14 Methods for identifying optical fibers that exhibit high levels of polarization dispersion

Country Status (12)

Country Link
US (1) US5966207A (en)
EP (1) EP1005637B1 (en)
JP (1) JP2001516021A (en)
KR (1) KR20010023019A (en)
CN (1) CN1265193A (en)
AT (1) ATE241805T1 (en)
AU (1) AU730983B2 (en)
BR (1) BR9811174A (en)
CA (1) CA2297330A1 (en)
DE (1) DE69815112D1 (en)
ID (1) ID24204A (en)
WO (1) WO1999009397A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1526368A4 (en) * 2002-07-19 2007-07-18 Fujikura Ltd Optical fiber polarization mode dispersion measurement method and measurement device
US6946646B2 (en) * 2002-11-05 2005-09-20 Corning Incorporated Method of evaluating fiber PMD using polarization optical time domain reflectometry
US7164469B1 (en) * 2005-06-30 2007-01-16 Corning Incorporated Method of evaluating fiber PMD using composite POTDR trace
US7190442B1 (en) * 2005-08-31 2007-03-13 Corning Incorporated Method of evaluating fiber PMD using POTDR trace
US9829429B2 (en) 2005-09-29 2017-11-28 Exfo Inc Determining a polarization-related characteristic of an optical link
US20100073667A1 (en) * 2007-03-28 2010-03-25 Normand Cyr Method and Apparatus for Determining Differential Group Delay and Polarization Mode Dispersion
US9134197B2 (en) * 2013-01-15 2015-09-15 Exfo Inc. Bi-directional multi-pulsewidth optical time-domain reflectometer
EP3758256B1 (en) * 2019-06-07 2021-12-08 EXFO Inc. Duplicate otdr measurement detection
CN113834631B (en) * 2020-06-23 2023-03-03 华为技术有限公司 Optical fiber measuring method, system and device
US11650128B2 (en) 2020-06-30 2023-05-16 Exfo Inc. Optical fiber recognition using backscattering pattern
US11879802B2 (en) 2020-10-22 2024-01-23 Exfo Inc. Testing optical fiber link continuity using OTDR backscattering patterns
JP7178643B2 (en) * 2020-10-30 2022-11-28 アンリツ株式会社 OTDR measuring device and OTDR measuring method
US11885707B2 (en) * 2021-11-17 2024-01-30 Ii-Vi Delaware, Inc. Fiber span characterization utilizing paired optical time domain reflectometers

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8519086D0 (en) * 1985-07-29 1985-09-04 Gen Electric Co Plc Coaxial couplers
GB8519608D0 (en) * 1985-08-05 1985-09-11 Gen Electric Co Plc Interferometers
US4838690A (en) * 1988-04-12 1989-06-13 Sumitomo Electric Fiber Optics Corporation Simultaneous bi-directional optical time domain reflectometry method
JP2589345B2 (en) * 1988-06-24 1997-03-12 日本電信電話株式会社 Method and apparatus for evaluating characteristics of optical fiber
US5479251A (en) * 1993-12-30 1995-12-26 Corning Incorporated Methods for determining optical properties of optical waveguide fibers using an optical time domain reflectometer
GB2286199B (en) * 1994-01-27 1997-06-11 Pirelli General Plc A method of forming an optical fibre preform
US5412745A (en) * 1994-05-05 1995-05-02 Corning Incorporated Fiber optic coupler exhibiting low nonadiabatic loss

Also Published As

Publication number Publication date
CN1265193A (en) 2000-08-30
US5966207A (en) 1999-10-12
JP2001516021A (en) 2001-09-25
ATE241805T1 (en) 2003-06-15
EP1005637A4 (en) 2002-06-12
AU730983B2 (en) 2001-03-22
ID24204A (en) 2000-07-13
KR20010023019A (en) 2001-03-26
CA2297330A1 (en) 1999-02-25
DE69815112D1 (en) 2003-07-03
AU8907598A (en) 1999-03-08
EP1005637B1 (en) 2003-05-28
EP1005637A1 (en) 2000-06-07
WO1999009397A1 (en) 1999-02-25

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]